Electric-lighting fixture



March 29, 1927.

INVENTOR. v

FIG. H

FIG. 1

F16. ls

Filed May 5, 1925 E c WHITE ELECTRIC LIGHTING FIXTURE FIG 3 fun Patented Mar. 29, 1927.

UNITED STATES PATENT OFFICE.

ERNEST CANTELO WHITE, OF NEW YORK, N. Y., ASSIGNOR OF ONE-HALF TO 31. FENTON- FISHER, OF PHILADELPHIA, PENNSYLVANIA.

ELECTRIC-LIGHTING. FIXTURE.

Application filed May 5,

My invention relates to the construction of all types of electric light fixtures including wall brackets, ceiling fixtures, chandeliers, table lamps,.floor lamps, adjustable fixtures and all appliances or parts thereof which contain or include a lamp socket.

In my copending application, Ser. No. 10,182 filed February 19, 1925, I described one method of producing a lighting fixture from moulded material in order to facilitate the assembly of a fixture with the necessary wires and wiring devices. The objects of my present invention are to furnish an improved construction for similar purposes and for the support of globes or shades.

In the accompanying drawings, Fig. 1 is the side view of an electric wall. bracket which is moulded in two halves, joined on the line A-A, the upper portion of the wall plate being shown in'vertical section; Fig. 2 is a. horizontal view of. the bracket as attached to a wall with the upper half of the bracket removed and the supporting centre knob shown in section; Fig. 3 is a cross-sectional view on the line BB of Fig. 2; Fig. 4 is across-section of one of the arms on the-line CC of Fig. 2;; Fig. 5 is a back view of the wall bracket; F ig. dis a front view of the centre knob used to support the bracket; Fig. 7 is a cross-sectional view similar to Fig. 3 showing the position: of an electric lamp and a shade when used, and.

also showing the position of an attachment plug when connected to the socket; Fi 8 a front View of the bracket; Fig. 9 1s a plan view oi one of the threaded socket covers; Fig. 10 is across-sectionthereof; Fig. '11

is a cross-section of another form of threaded socket cover; Fig. 12 is a cross-section ot'a shade supporting ring; Fig. 13 is a view of the twinlamp socket used in the fixture.

In carrying out my invention according to the illustrated embodiment thereof, I provide parts moulded in insulating material includingha'lt bodies 1 and 2 which are exactly alike so that .twoparts from the same mould maybe assembled as shown.

A twin socket 3, 'having a. push button 4 and wires 5. 5 connected'to its binding screws 6, 6 is inserted endwise into the lower halfbody 1, the wires being laid into the grooves 16 and the two ends of the push button 4' fitting into grooves 7., 7'. The upper halfbody 2 is then slippedover the upper end of the socket and into an assembled'position.

1925. Serial No. 28,060.

Two threaded socket covers of moulded insulating material, 8 and 9, having internal threads 10 which fit the outside of the threadr ed screw-shells of the twinlamp socket, are then screwed onto the said lamp socket until the ends of the said socket covers seat respectivel into the rabbets 11 and 12 of the half-bodies 1 and 2.

Inasmuch as the twin socket 3 is composed of parts firmly riveted together, the socket is thus partially utilized as a bolt and the two threaded socket covers as nuts to lock the two half-bodies together so as to form. in combination with the socket covers, a complete bracket which may then be supported on an outlet by means ofa knob 13 and a.

threaded stud 14.

The knob 13 has an internal taper 15 wliich fits over a corresponding conical surface of the two half-bodies sothat when the bracket is drawn back against the wall by the knob 13, the conical surfaces of the two half-bodies are drawn tightly together by the internal taper of the knob.

It will be observed from the above description that the socket is held rigidly in position by the counteracting pull of" the two socket covers. so that it is not necessary to utilize the push-button 4 in the groove 7 to position the socket in the fixture. This pie vents binding of the push-button which permits amore satisfactory use of the switch operated thereby.

Figs. 7 and 8 show the bracket assembled with .a threaded socket cover 8", which is similar to socket cover '8, substituted for the socket cover 9 shown in Figs. 1 and 3 and with an additional moulded ring 17 in position outside of the upper threaded socket cover. This ring 17 is made to slip over the threaded socket cover and has a flange 1:8 of approximately the same diameter ofthe flange 19. When assembled, the

general position is that shown in Fig. 8 when no shade is used.

If it is desired to utilize a glass shade, 113, is better to use one having a plain hole WltllOLll? the usual lip. The socket cover 8 and the ring 17 are then removed from the socket, the member 8 is inserted through the opening in the shade from the inside, the ring 17 is slippedover the member 8', which is then screwed back onto the socketshell, giving a complete assembly as i llustrated'in Fig. 7. after thefla'mp isi-nserted. The rabbet 12 is made deep enough so that when the flanges 19 and 18 are gripping the glass shade and therefore separated by the thickness of the shade, the inside end of the threaded socket cover will still be entered partly into the said rabbet in order to centre the various parts with the axis of the main body of the bracket. When screwed up tightly, the actual hearing will be between the ring 17 and the half-body 2. The members 8 and 8 are moulded with a number of small projections 20 which may be conveniently engaged by the operators fingers inside of a shade in order to screw the parts together until some friction is established between the lower side of the fiange 19 and the shade, after which they may be further tightened by turning the shade itself at the same time.

The inside dimensions of the flange 19 permit the use of a standard two-piece attachment plug as shown in dotted lines in Fi 7; The total length of the part 8 is such that when the cap is removed from the attachment plug the screw portion of the plug which remains in the socket will be practically concealed from all angles of view above the horizontal.

he wall plate portion of the half-bodies 1 and 2 may be moulded with bridges 21 and 22 spaced from the back edge of the bracket as illustrated in Figs. 1 and 2 and provided with notches 23 and 24:, as shown in Fig. 5, in order to provide for supporting the bracket on a hook attached to an outlet box. For example, when the bridge 22 is utilized for this purpose, the notch 24 prevents the bracket from slipping sideways on the hook and the space between the bridge 22 and the wall, provides room for the projecting edges of an outlet box. The hooks commonly used for this purpose are attached to the electric outlet by means of a threaded stud so that the distance of the hook from the wall surface may be adjusted to lit the position of the bridge of a bracket as will be understood by anyone versed in the art of installing electric lighting fixtures.

An important feature of my improved bracket is the provision of two arms instead of one to support the socket housing. This not only enables the provision of more ample space 16 for a conductor in each arm, but also provides a more rigid construction and particularly facilitates the use of the push-button switch in the position shown, so that the front button may be pushed to turn on the light and the rear button operated from the open space between the arms to turn it off.

The new methods of construction herein described are applicable to all other forms of lighting fixtures as well as to wall brackets and my invention, therefore, includes all devices in which the construction and assembly of parts include what I claim as new, which is:

1. An electrical lighting fixture comprising a lamp socket, electrical conductors leading thereto, a housing for said socket and conductors formed of moulded insulating material in a plurality of parts, and threaded means adapted to screw onto the outside of the screw-shellv of the lamp socket for holding the said housing together in sembled relation.

2. Ali-electric lighting fixture comprising a lamp socket, conductors leading thereto, a housing for said socket and conductors formed of moulded insulating material in a plurality of parts and means integrally moulded with one portion of the said housing for sliding engagement with a fixture hook on an electric outlet.

3. An electric lighting fixture including a lamp socket having a metallic screw-shell, conductors leading to the said socket, a housing for said socket and conductors formed of moulded insulating material in a plurality of parts, and a shade retaining member formed of moulded insulating material and threaded internally to screw onto the outside of the said screw-shell.

4. An electric lighting fixture consisting of two lamp sockets arranged on the same axis and pointing in opposite directions, conductors leading thereto, a housing for the said sockets and conductors formed of moulded insulating material in a plurality of parts, two of the said parts being adapted to screw onto the outside of the said screwshells and to hold the rest of the said housing together in an assembled relation.

5. An electric lighting fixture comprising a lamp socket, conductors leading thereto, a housing for the said socket formed of moulded insulating material, a plurality of arms spaced apart and supporting the said housing and moulded integrally therewith and a space in each of said arms adapted to accommodate one of the said conductors.

6. An electric wall bracket comprising a push-button socket, a socket-housing therefor, a wall plate, two arms spaced apart and supported by the wall plate and attached to the said socket-housing, one end of the pushbutton of said socket being disposed in the space between the said arms.

7. An electric lighting fixture formed of moulded insulating material, the portion of said fixture adapted to bear against the wall being made in two parts, means for attaching the said fixture to an electric outlet, the said attaching means being adapted to draw the said two parts together in assembled relation when tightened up so to draw the said fixture against the wall.

8. An electric wall bracket comprising a push-button lamp socket having two screwshell contacts arranged on the same axis and pointing in opposite directions, conductors leading thereto, a housing for said socket and conductors formed of moulded insulating material in a plurality of parts, two parts of said housing being adapted to screw onto the outside of said screw-shells so as to hold other parts of the housing together in assembled relation, the said housing including two arms horizontally disposed, one end of the push-button being disposed in the space between the tWo arms, a portion of the said housing being formed as a Wall plate,

and means for attaching the said Wall plate to an electric outlet.

9. An electric hghtmg fixture including a lamp socket having a metalllc screw-shell,

an inner shade ring formed of insulating material and threaded internally to screw onto the outside of said screw-shell, the said inner shade ring being adapted to be inserted through the opening in a shade and having a flange adapted to bear against the inside surface of the said shade, an outer shade ring adapted to slip over the inner shade ring and bear against the outer surface of the said shade, and a bearing for the outer shade ring, said bearing being fixed in relation to the said screw-shell when the fixture is assembled.

Signed at New York, N. Y., on this 2nd day of May, 1925.

ERNEST CANTELO WHITE. 

